National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

A Few Clouds

81°F

27°C

Humidity 51%
Wind Speed W 8 mph
Barometer 29.89 in (1011.2 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 16 Apr 12:56 pm EDT
Extended Forecast for

Mongaup Valley NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 83. Southwest wind around 7 mph.

    High: 83 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers after 1am. Mostly cloudy, with a low around 57. Light and variable wind. Chance of precipitation is 20%.

    Low: 57 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers after 1pm. Mostly sunny, with a high near 73. Northwest wind 3 to 6 mph. Chance of precipitation is 20%.

    High: 73 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Increasing clouds, with a low around 52. Calm wind.

    Low: 52 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 70. South wind 3 to 8 mph.

    High: 70 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 39. Chance of precipitation is 70%.

    Low: 39 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers. High near 52. Chance of precipitation is 80%.

    High: 52 °F

    Showers

  • Sunday Night

    Sunday Night: Rain likely, possibly mixed with snow showers, mainly before 8pm. Partly cloudy, with a low around 27. Chance of precipitation is 60%.

    Low: 27 °F

    Rain/Snow
    Likely then
    Chance
    Rain/Snow

  • Monday

    Monday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 83. Southwest wind around 7 mph.
Tonight
A slight chance of showers after 1am. Mostly cloudy, with a low around 57. Light and variable wind. Chance of precipitation is 20%.
Friday
A slight chance of showers after 1pm. Mostly sunny, with a high near 73. Northwest wind 3 to 6 mph. Chance of precipitation is 20%.
Friday Night
Increasing clouds, with a low around 52. Calm wind.
Saturday
Partly sunny, with a high near 70. South wind 3 to 8 mph.
Saturday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 39. Chance of precipitation is 70%.
Sunday
Showers. High near 52. Chance of precipitation is 80%.
Sunday Night
Rain likely, possibly mixed with snow showers, mainly before 8pm. Partly cloudy, with a low around 27. Chance of precipitation is 60%.
Monday
Partly sunny, with a high near 41.
Monday Night
Mostly clear, with a low around 22.
Tuesday
Sunny, with a high near 52.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 37. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mongaup Valley NY
 41.67°N 74.79°W (Elev. 1175 ft)
Last Update:
12:20 pm EDT Apr 16, 2026
Forecast Valid:
1pm EDT Apr 16, 2026-6pm EDT Apr 22, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation